The present invention relates to a cutter structure for a lawn mower that is coupled to and rotates on a rotating shaft of a mower, the lower housing 110 having a central portion coupled to and rotating with a rotating shaft of the mower； A plurality of support pins 210 spaced a predetermined distance from the center of the lower housing 110 and installed on the circumference along the inner space of the lower housing 110； As a member having a 'b' cross-section, one side of the horizontal portion is fixed by being inserted into the lower portion of each of the support pins 210, and a spring-bonding bracket in which a first incision groove 221 is formed at the center of the upper portion of the vertical portion ( 220)； Torsion springs 230 which are coupled to be inserted into each of the support pins 210 and are located above the spring binding bracket 220, and one end is accommodated in the first cutting groove 221 of the spring binding bracket 220. )； As a member having a 'a' cross-section, one side of the horizontal portion close to the vertical portion is coupled to be inserted into each of the support pins 210, and the other side of the horizontal portion serving as a cutting edge is the lower housing 110. A cutter 240 that protrudes outward and is provided with a second incision groove 242 in the center of the lower end of the vertical portion to receive the other end of the torsion spring 230； And an upper cover 310 coupled to the upper portion of the lower housing 110 and rotating together with the lower housing 110.본 발명은 예초기의 회전축에 결합되어 회전하는 예초기용 커터 구조에 관한 것으로서, 중심부가 예초기의 회전축에 결합되어 회전하는 하부하우징(110)； 상기 하부하우징(110)의 중심부에서 미리 설정된 거리만큼 이격되어 상기 하부하우징(110)의 내측 공간을 따라 원주상에 설치되는 다수의 지지핀(210)； 'ㄴ'형 단면을 가지는 부재로서, 수평 부위의 일측면은 상기 지지핀(210) 각각의 하부에 삽입되어 고정되고, 수직 부위의 상단부 중앙에는 제1절개홈(221)이 형성된 스프링결착브라켓(220)； 상기 지지핀(210) 각각에 삽입되도록 결합되어 상기 스프링결착브라켓(220)의 상부에 위치하며, 일측 단부는 상기 스프링결착브라켓(220)의 제1절개홈(221)에 수용되는 토션스프링(230)； 'ㄱ'형 단면을 가지는 부재로서, 수직 부위와 가까운 수평 부위의 일측면은 상기 지지핀(210) 각각에 삽입되도
